Stereotype-finishing machine



2 SheetsSheet 1'.

(No Model.)

0. T. MURRAY.

STEREOTYPE FINISHING MACHINE.

No. 394,594. Patented Dec. 18, 1888.

jfm

2 SheetsSheet (No Model.)

0. T. MURRAY.

STEREOTYPE FINISHING MACHINE.

No. 394,594; Patented Dec. 18, 1888 awuewtor MJWQ/ @51 9% Gummy,

qwi wmooeo fijm UNITED STATES PATENT OFFICE.

CHARLES T. MURRAY, OF KANSAS CITY, MISSOURI.

STEREOTYPE-FINISHING MACHINE.

SPECIFICATION forming part of Letters Patent No. 394,594, dated December18, 1888.

Application filed August 23, 1888. Serial No. 283,580. (No model.)

To all whom it may concern.-

Be it known that 1, CHARLES T. MURRAY, of Kansas City, Jackson county,Missouri, have invented certain new and useful Improvements inStereotype-Plate-Finishing Machines, of which the following is a full,clear, and exact description, reference being had to the accompanyingdrawings, forming a part hereof.

This invention relates to machines used in the preparation or finishingof stereotypeplates of the several different forms; and it consists inthe novel construction, combination, and arrangement of partshereinafter set forth and claimed.

In the drawings, Figure 1 is a perspective view of my improved machine.Fig. 2 is an enlarged detail view in perspective of the shaving-knifecarriage and its operative devices detached. Fig. 3 is an end view ofthe trimining-carriage and its attached adjustable gage, and Fig. t is adetail view of a toothed pinion and its attached pawl.

The supporting-frame, which may be of any suitable construction, isrepresei'ited by 100, while 200 is the table, which latter is elevatedabove the remaining portion, and upon which is mounted in properbearings a double-ended arbor, 40, carrying an ordinary saw, E, at oneend and a cutter-head, E, at the other end, which saw and cutter-headare obviously interchangeable as regards their location. A slottedsaw-table, 42, is elevated still farther and located uponsupporting-standards 43, projecting upwardly from table 200. This tableis preferably provided with a hinge or hingessuch as i r.so that it maybe turned back to allow access to the arbor and its attachments. A smallpulley, 41, is also mounted on arbor t0 between its bearings, and thearbor is driven by a belt, 1+1, passing down through a slot in the tableand around larger pulley, 13, carried by counter-shaft 10, which latteris journaled in bearings in lower part of frame 100. A driving-pulley,12, is mounted on the projecting end of shaft 10, so as to be engaged byany suitable belt or other drivinggearing (not shown) to drive thearbor.

The trimming-carriage B is mounted upon two parallel slideways, B, withone end adjacent to cutter-head E, so that it may be reciprocated in atransverse direction thereto during the operation of trimming the edgeof a plate.

Carriage B is provided with a longitudinal slideway, D, in the form of adovetail in crosssection, and an adjustable gage, C, and itsscrew-bracket D are mounted on said slideway, so that the plate may befed toward the cutter-head during the trimming operation. Said gage isadapted to be adjustably secured to said slideway I), according to thewidth of the plate to be operated on, by means of feedscrew a, whichlatter is threaded through the upper portion of the bracket and securedto rotate in the upper part of the gage, a lug, 0, being formed on theupper side of the gage, and said screw being threaded through it, asshown.

Hand-wheel I; is located on the outer end of screw a for revolving saidscrew, and a thumbscrew, 0, is passed through the lower portion of saidbracket and engages one side of the dovetailed slideway to lock saidbracket in any desired point of adjustment.

Formed in the table, and extending lengthwise thereof under thetrimming-carriage, is a suitably-sized recess or depression, 300, inwhich are located the devices used for shaving the plates, which areconstructed as follows:

I represents a raised platform located in the depression 300,1he top Gthereof forming the shaving-table, and the edges of which are providedwith suitable slideways, f. Mounted upon these slidewaysis theshavingcarriage 400, the side bars, F, of which are provided withslide-grooves 15, which latter engage corresponding slideways f onplatform I, and with toothed racks f.

The shaving-knife F is mounted in the front end of carriage 400, and ismade vertically adjustable with relation to table G by means ofthumb-screws It, which latter are passed loosely through suitableprojecting lugs on said carriage, and are threaded into said knife orlugs attached thereto. Said knife is provided with vertical slots 7,through which are passed set-screws S into the end of carriage 400, Fig.2.

For reciprocatiu g the shaving-carriage upon its slideways during use,(which is accomplished by manual power,) a shaft, 6, is journaled inbearings across the depression 300 in a longitudinal direction anddirectly beneath said carriage, and is provided with toothed pinions f,which latter mesh with racks f on side bars, F. There is also aratchet-wheel, g, and another toothed pinion, h, mounted on the outerend of shaft 6the latter loosely, so as to partially revolve, and theformer rigidly, so as to revolve the shaft when it is turned, as willimmediately be described.

H represents a hand-lever fulcrumed at a short distance from its innerend upon a pin or shaft, 2, projecting from the frame of the machine, soas to have an oscillatory vertical movement, and provided with a toothedsegment, Z, at said inner end, the teeth of which latter mesh with theteeth of pinion h. Pivoted to the face of the pinion h is a suitablepawl, 3, (gravity or spring-actuated,) which engages the teeth ofratchet-wheel g, as will be described farther on.

A supporting-bracket, Al, in which the outer end. of shaft 6 has abearing, is hung from the under side of the table 200 at one end, whichof course may be dispensed with without affecting the operation.

To prevent the plates from being pushed oif the table G by the action ofknife F, a raised strip or abutment, 5, is located on the upper surfaceof said table at its front end.

To protect the eyes of the operator from flying chips in using the toolslocated on arbor 40, a glass plate, d, is adjustably suspended over saidarbor in any approved way.

The cutter-head E may be provided with angular cutters e, or withcutters of any suitable style for the work to be. performed by it. Forinstance, in some cases I may substitute saw E for cutter-head E, andvice versa, as the work to be done may require.

In grooving or coring out the under side of a plate I would locate asuitable cutter upon the end of the arbor, which the saw is here shownupon, or I may remove the saw entirely and locate another cutter-head inthe place it is shown to occupy.

lVith this construction the operation is as follows: In cutting platesto different sizes the saw E is made use of in the well-known way,

its table 42 being capable of adjustment up and down, and also arrangedto be turned back out of the way. In trimming the edge of a plate thecutter-head E is made use of, the plate to be trimmed being laid oncarriage B and the gage O adjusted properly by turning feed-screw a tofeed said plate toward the cutters. In shaving, the plate is laid upontable G and knife]? is properly adjusted by means of thumb-screws 7c,and the knife-carriage 400 is reciprocated by the depression andelevating of hand lever H. Upon depressing said lever the pawl" 3 isretracted over the teeth of ratchet-wheelg;wliile elevating said levercauses said pawlto engage said teeth and revolve said ratchet-wheel andshaft 6, which latter carries pinions f meshing with the racks on theshaving-carriage. After a complete stroke of the carriage has been madeit is returned to normal position by first raising pawl 3 out ofengagement with the ratchet-wheel and then pushing by hand, after whichthe pawl is released and immediately resumes its engagement with thewheel and is ready for another stroke. It will be observed that theshaving-carriage is thus moved intermittently by the action of thehand-lever, the operator having perfect control of the knife at everypart of the shaving.

stroke.

A machine thus constructed is very compact, requiring littlefloor-space, and its effect iveness is readily apparent.

To more effectually permit the shaving operation to be accomplished, thetrimming-carriage and its attached guide may be readily removed from theslideways B thus getting it entirely out of the way and permittingaccess to be had to, the devices locatedbeneath it almost as readily asif it were not a part of the machine.

Having thus described my invention, what I claim is- 1. The combination,in a stereotype-platefinishing machine, of the main table con-- strnctedwith a recess or depression, the raised platform provided with slidewaysand located in said depression, a carriage carrying a shav ing-knife andmounted on the slideways of said platform, the trimming-carriage mountedupon slideways above said depression in the table, and a rotarycutter-head adapted to trim the edges of a plate carried by saidtrimming-carriage, substantially as specified.

2. The combination, in a stereotype-platefinishing machine, of the maintable constructed with a depression, the raised slideways located insaid depression, a reciprocating shaving-carriage mounted on saidslideways in the depression, the trimming-carriage mounted uponslideways above said depression in the table, an arbor mounted inbearings on the table and provided with a driving-pulley, a rotarycutter-head mounted on the end of said arbor that is adjacent to saidtrimming-carriage, and adapted to trim the edges of a plate carried bysaid trimming-carriage, a table mounted on the main table above saidarbor, and a rotary cutting-tool mounted on the end of said arbor thatis opposite said rotary cutter-head, substantially as specified.

3. In a stereotype-plate-finishing machine, the combination, with areciprocating carriage provided with toothed racks, of atransverselyarranged shaft carrying pinions which mesh with said racks,a ratchet-wheel and another toothed pinion, also mounted on said shaft,

IIO

In testimony whereof I affix my signature in presence of two witnesses.

CHARLES T. MURRAY.

\Vitn esses:

E. E. HIGDON, CHARLES E. SUTHERLAND.

